Thai National Parks

Amphibians of Thailand

Species of Thailand

Rugosed frog

Thai: กบนา

Binomial name: Hoplobatrachus rugulosus, Arend Friedrich August Wiegmann, 1834

The Chinese edible frog, East Asian bullfrog, or Taiwanese frog (Hoplobatrachus rugulosus) is a species of frog in the Dicroglossidae family. It is found in Cambodia, China, Hong Kong, Laos, Macau, Malaysia, Myanmar, the Philippines, Taiwan, Thailand, and Vietnam. Its natural habitats are freshwater marshes, intermittent freshwater marshes, arable land, pasture land, rural gardens, urban areas, ponds, aquaculture ponds, open excavations, irrigated land, seasonally flooded agricultural land, and canals and ditches. They breed in spring–early summer.

H. rugulosus is a large, robust frog, up to 12 cm or more in snout-vent length. Females are larger than males. They are primarily insectivores.

Regional Names

The Chinese edible frog is commonly referred to as 田雞 ("field chicken") or 虎皮蛙 ("tiger-skinned frog") in Mainland China, Hong Kong, Taiwan, Macau, and Chinese communities worldwide. In Filipino, they are called "palakang bukid, " which means "frog of the field."


The frogs are commonly found in wet markets, seafood markets, and pet stores. In wet markets, they are usually sold per piece or per kilogram. The medium-sized frogs are sold as pets in pet stores, and the smaller variant is sold as live food for arowanas. They are widely farmed in Sichuan, China, Malaysia, and Thailand.

These frogs, though much smaller than their Western counterparts, are used by the Chinese to cook frog legs and the Filipinos who cook them using the adobo method. The frog's forelimbs and hind legs are fried in oil, while in the adobo method (in which the entire frog is utilized), they are cooked in soy sauce and vinegar.

This article uses material from Wikipedia released under the Creative Commons Attribution-Share-Alike Licence 3.0. Eventual photos shown in this page may or may not be from Wikipedia, please see the license details for photos in photo by-lines.

Scientific classification

Hoplobatrachus rugulosus

Common names

  • English:
    • Rugosed frog
    • East Asian bullfrog
    • Chinese edible frog
    • Taiwanese frog
  • Thai: กบนา


  • Rana rugulosa, Arend Friedrich August Wiegmann (1834)

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Distribution map of Rugosed frog, Hoplobatrachus rugulosus in Thailand
  • Huai Kha Khaeng Wildlife Sanctuary
  • Kaeng Tana National Park
  • Ko Samui District, Surat Thani
  • Prachantakham District, Prachinburi
  • Sikhio District, Nakhon Ratchasima
  • Sung Noen District, Nakhon Ratchasima

Range map of Hoplobatrachus rugulosus in Thailand

Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.

Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.

Contribute or get help with ID

Please help us improving our species range maps. To add a new location to the range map we need a clear image of the specimen you have encountered. No problem if you do not know the species, we will do our best to identify it for you.

For the location, please provide the district name or the national park/ wildlife sanctuary name.

Please post your images to our Thai Species Identification Help group on Facebook.